[Fwd: Re: Audi 100 Won't Start]
audi at humanspeakers.com
Mon Jan 26 20:54:52 EST 2004
> I too am thinking about the possibility of a vacuum leak in fact today I
> was trying to check the hose that runs from the ISV to the rubber air
> bonnet. I've checked all the visible hoses but its really difficult to
> check since car won't run for that long. Any tips finding a vacuum
> leak? It would (in my view) have to be a very large leak to prevent the
> car running. I've disconnected small hoses before without it shutting
> off the car.
Disconnecting hoses on a running car is different - it's warm, and the
closed loop ECU can compensate.
Your car isn't starting properly, although I guess it does "catch" a bit.
Anyway... you should literally be able to pull a vacuum on the intake
tract, I think. Any open intake valve will lead to a closed exhaust
valve. Only trouble is stopping air from coming in through the "normal"
inlet - might be easy to block, at least, if it's me saying and you
doing it, I call that "easy"...
Hook up a mity-vac or something and play. Also, blowing compressed air
in (just a few psi) might find something.
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